Environmental Engineering Reference
In-Depth Information
Fig. 4. Different strategies fo give feedback of the dragged object: left column transparent
feedback, right column opaque feedback; first row the cursor is substituted by the object;
seond row, the cursor is centered on the object ; third row, the object is at bottom right of the
cursor.
Cognitive assistance can also be provided through game-master actions. The game-master is a
component of the game logics that simulates the intervention of an external observer. It helps
the patient by emitting instructions and feedback messages, removing objects of the scenario
to simplify it, demonstrating the required action or doing it automatically partially or totally.
This way, if focus of the task is put on picking objects and not placing them anywhere else,
the picking action can be implemented as a pick-and-place: users pick and the game-master
places them.
4. Navigation methods
We propose four different modes of navigation: free navigation, two user-assisted navigation
modes and a fully automatic navigation.
